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J. A.. BOALS. Mail-Bag Cradle.

" Patented Oct. 23,

or GARDVILL, PENNSYLVANA.

iwi-"PRvll:lvl-Emi` INi MAIL-BAG cRANiEPs.

'speoicafionfrmmg pm of Laes Patent nq'. lecher, dated; october 23,1877; ppiieaub fired July 14,1877.

Jmirns A: Bouts; or DrsMon'n, igssrenoia pro `D.-

yBri-intr Safinorunns';

`To all whom it may'concem: l In the inner recesseslfareplaced .iiat Arubber Be it known that I, JAMES A. BoALs," of springs or cushions h`h,'retained in' place by.

Dinsmore, in the county of Washington and clamps'F, and adjustable by wedges i. In

i new and useful Improvements in Mail-Bag yof the arms, are pivoted T-shaped hooks G, Cranes andIdo hereby declare thatthe followthe bodies of which occupy the outer recesses ing is afull, clear, and exactdescription thereof, g, in which they are held by the tension of the which will enable others skilled in the art to rubber springs. which it appertains to make and use the same, In operation, the lower arm is raised from reference being had to the accompanying draw thevertical position which it naturally occuings, which form a part of this specification, pies, as in Fig. 2, to a horizontal position. and iu which- (Shown in Fig. l.) Being hinged to brace D,

Figure l is a side elevation, showinga mailit lowers this and arm B, which latter is thus bag in position. Fig. 2 is a side view taken also brought to a horizontal position, parallel from the opposite side, the mail-bag h'aving to arm C, while the brace connects the two, been detached. Fig. 3 is a section on the line and, by the adjustable bolt e, keeps their ends w m, Fig. l; and Fig. 4 is a section on the line a proper distance apart. The mail-bag is now y y, Fig. 3. suspended, by the ring at its upper end, upon State of Pennsylvania, have inventedc'ertain these rubber pads, andin s lots jj inthe ends Similar letters of reference indicate correthe T-shaped hook Gr of the upper arm. Its

, sponding parts in all the iigures. lower ring is similarly slipped over the T- My invention relates to that cla-ss of mailshaped hook of the lower arm, as shown in bag cranes in which the arms between which the drawing. The hooks are kept in position the bag is suspended are arranged to swing by the tension of the rubber springs, which aside the instant the bag is released; and may be" regulated by the wedges The ends it consists, specifically, in certain improveof arms B C are notched, in the usual manments on the mail-bag crane for which Letters ner, to receive the ends of hooks G and pre- Patent ofthe United States, No. 179,511, were ventthe bag from slipping oit' by the curgranted on the 4th day of July, 1876, as I shall rents of air set in motion by passing trains. now proceed more fully to describe. When the catcher of a passing mail-train In the drawings, Ais an upright having two comes in contact with the bag, it Iirst takes pivoted arms, B C. The upper of these, B, up the slack of this and of arms B C, thus sehas a pivoted brace, D, having at its lower curing the bag safely in the angle of the end aloop or bail, d, engaging with a similar catcher. The ends of hooks G G are then reloop or bail, c, at the rear end of the lower leased from the notches in the ends of the .H arm C, thus forming. a loose hinge, which adarms, thus allowing the hooks to swing aside, mits of the free movements of the brace and so as to permit the mail-bag to slip off. As arm. The rear end of arm B is loaded with a soon as the bag is released the Weight of This latter has a series of perforations, a a, the side of upright A. At the same time it i through one of which is inserted an adjustalifts the brace D, the weight of which is counble pin or bolt, e, which, when the arms are terbalanced by the weight Z upon arm B, brought together to receive the mail-bag, rests which latter is also pushed, by brace D, up to in a hook, E, secured to the front of upright a vertical position, as shown in Fig. 2.

A, thus performing the double function of The general advantages of my improved regulating the distance between the ends of the mail-bag crane are so obvious as to require no arms to receive a largeor small mail-bag, and further explanation. Over and above the serving as a rest for brace D and arm B. The mail-bag crane heretofore patented by me, as ends of armsB C, which, when the arms are above described, my improvement has the addoubly recessed or steppedas shown, at f g. ent the lower arm is relied on, when it falls weight, b, to balance the weight of brace D. arm C causes it to fall down vertically along in a horizontal position, face each other, are vantage of certainty of action. In said pat- UnitedStatesf down by theV reears@ of cheV bag,l toi srike f arms B @and hook E, allamanged and operiv` Y gagaust'therbrace ApmtyA to the'upperiarm Y 'afthg'sbstafntiallyurthe manne auldb151197177V "fand lifit'goffaistuduponwhich itrestsl.rfrThis puposeshown :13nd spe'ced: Y V AL Ihave foundrnotf alwafiystwmk srmtsfactofly; 'f 13.1 Tha armsBOr, hzwngfdfsuble recesses fV i {@but my YpresgmV improvement, hzwngth end y Vamd'lubbe'r 'springsorgpads k and T-shaped L i Y i of mm3 hinged lrdselyf tu brace 1353s herein Vwspkfs G arranged therein, substantially in the z 1 i i i g Y i desribed,' @bvztesy this'ds'advmitage. The 'mnneijfdscxibedi for thepurposeshown and Y i l 'eonsrtructonand operation of theV hooks for specified, Y Y Y V i Y :holding theV Emil-baggfV meV alsoV materially; imi Y i Y Q4.' The `Combilmfon Of Y tha-rubber springs i Y proved. f Y Y L f f VVor'jgadrs @Wedges fi, and pvoted T-shapedf Y Y Y "Havngthus described lynvention,eam hooks G, forming the Vdevc'armV suspending 

